[INFO] fetching crate jobsteal 0.5.1...
[INFO] building jobsteal-0.5.1 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate jobsteal 0.5.1 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate jobsteal 0.5.1 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jobsteal 0.5.1
[INFO] finished tweaking crates.io crate jobsteal 0.5.1
[INFO] tweaked toml for crates.io crate jobsteal 0.5.1 written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c88eb3857bedb8aa61a3eb333c69e162923cd00dbf582ae962fef607de0baee4
[INFO] running `Command { std: "docker" "start" "-a" "c88eb3857bedb8aa61a3eb333c69e162923cd00dbf582ae962fef607de0baee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c88eb3857bedb8aa61a3eb333c69e162923cd00dbf582ae962fef607de0baee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c88eb3857bedb8aa61a3eb333c69e162923cd00dbf582ae962fef607de0baee4", kill_on_drop: false }`
[INFO] [stdout] c88eb3857bedb8aa61a3eb333c69e162923cd00dbf582ae962fef607de0baee4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 648a9121f10ff98100efd528a0a16020b4e4d1c1810d7f2ec51114c60ff0b72d
[INFO] running `Command { std: "docker" "start" "-a" "648a9121f10ff98100efd528a0a16020b4e4d1c1810d7f2ec51114c60ff0b72d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling jobsteal v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Heap(Box<Thunk>),
[INFO] [stdout]    |              ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:89
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Thunk + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let fat_ptr: *mut Thunk = code_ptr;
[INFO] [stdout]     |                               ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let code_ptr: *mut Thunk = mem::transmute(t_obj);
[INFO] [stdout]     |                                    ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn call<I: Iterator<Item=(&'a U)>>(self, iter: I) -> Self::Out {
[INFO] [stdout]    |                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 | where T: Consumer<In, Item=(&'a U)> {
[INFO] [stdout]    |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/iter/map.rs:100:80
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl<'a, T, U: Clone + 'a> Spliterator for Cloned<T> where T: Spliterator<Item=(&'a U)> {
[INFO] [stdout]     |                                                                                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/iter/mod.rs:302:20
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn split(self, usize) -> (Self, Self);
[INFO] [stdout]     |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/iter/mod.rs:517:40
[INFO] [stdout]     |
[INFO] [stdout] 517 |     fn call<I: Iterator<Item=T>>(self, I) -> Self::Out;
[INFO] [stdout]     |                                        ^ help: try naming the parameter or explicitly ignoring it: `_: I`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:319:26
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let handle = try!(builder.spawn(move || worker_main(worker)));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/arena.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut buf = self.buf.get();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.20s
[INFO] running `Command { std: "docker" "inspect" "648a9121f10ff98100efd528a0a16020b4e4d1c1810d7f2ec51114c60ff0b72d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "648a9121f10ff98100efd528a0a16020b4e4d1c1810d7f2ec51114c60ff0b72d", kill_on_drop: false }`
[INFO] [stdout] 648a9121f10ff98100efd528a0a16020b4e4d1c1810d7f2ec51114c60ff0b72d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9aac2746b00b4f6f32017d890b8445db1497d414dedfdf171d3c07fdee826e0c
[INFO] running `Command { std: "docker" "start" "-a" "9aac2746b00b4f6f32017d890b8445db1497d414dedfdf171d3c07fdee826e0c", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Heap(Box<Thunk>),
[INFO] [stdout]    |              ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:89
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Thunk + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let fat_ptr: *mut Thunk = code_ptr;
[INFO] [stdout]     |                               ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let code_ptr: *mut Thunk = mem::transmute(t_obj);
[INFO] [stdout]     |                                    ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn call<I: Iterator<Item=(&'a U)>>(self, iter: I) -> Self::Out {
[INFO] [stdout]    |                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 | where T: Consumer<In, Item=(&'a U)> {
[INFO] [stdout]    |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/iter/map.rs:100:80
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl<'a, T, U: Clone + 'a> Spliterator for Cloned<T> where T: Spliterator<Item=(&'a U)> {
[INFO] [stdout]     |                                                                                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling jobsteal v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/iter/mod.rs:302:20
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn split(self, usize) -> (Self, Self);
[INFO] [stdout]     |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/iter/mod.rs:517:40
[INFO] [stdout]     |
[INFO] [stdout] 517 |     fn call<I: Iterator<Item=T>>(self, I) -> Self::Out;
[INFO] [stdout]     |                                        ^ help: try naming the parameter or explicitly ignoring it: `_: I`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:319:26
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let handle = try!(builder.spawn(move || worker_main(worker)));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/arena.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut buf = self.buf.get();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Heap(Box<Thunk>),
[INFO] [stdout]    |              ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/job.rs:88:89
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let static_code: Box<Thunk> = unsafe { mem::transmute(Box::new(code) as Box<Thunk + 'a>) };
[INFO] [stdout]    |                                                                                         ^^^^^^^^^^ help: use `dyn`: `dyn Thunk + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:101:31
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let fat_ptr: *mut Thunk = code_ptr;
[INFO] [stdout]     |                               ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/job.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let code_ptr: *mut Thunk = mem::transmute(t_obj);
[INFO] [stdout]     |                                    ^^^^^ help: use `dyn`: `dyn Thunk`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn call<I: Iterator<Item=(&'a U)>>(self, iter: I) -> Self::Out {
[INFO] [stdout]    |                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/iter/map.rs:92:28
[INFO] [stdout]    |
[INFO] [stdout] 92 | where T: Consumer<In, Item=(&'a U)> {
[INFO] [stdout]    |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/iter/map.rs:100:80
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl<'a, T, U: Clone + 'a> Spliterator for Cloned<T> where T: Spliterator<Item=(&'a U)> {
[INFO] [stdout]     |                                                                                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/iter/mod.rs:302:20
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn split(self, usize) -> (Self, Self);
[INFO] [stdout]     |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/iter/mod.rs:517:40
[INFO] [stdout]     |
[INFO] [stdout] 517 |     fn call<I: Iterator<Item=T>>(self, I) -> Self::Out;
[INFO] [stdout]     |                                        ^ help: try naming the parameter or explicitly ignoring it: `_: I`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:319:26
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let handle = try!(builder.spawn(move || worker_main(worker)));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/arena.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut buf = self.buf.get();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "9aac2746b00b4f6f32017d890b8445db1497d414dedfdf171d3c07fdee826e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aac2746b00b4f6f32017d890b8445db1497d414dedfdf171d3c07fdee826e0c", kill_on_drop: false }`
[INFO] [stdout] 9aac2746b00b4f6f32017d890b8445db1497d414dedfdf171d3c07fdee826e0c